嵌入式系统

摘要：<p style="margin:20px auto 0px;padding:0px;border:0px none;white-space:normal;color:#666666;font-family:微软雅黑, arial, &quot;Hiragino Sans GB&quot;;font-size:14px;background-color:#FFFFFF;text-align:center;"> <img src="http://2017.cq1718.com/ueditor/php/upload/image/20171211/1512972819458720.jpg" alt="嵌入式系统" style="margin:0px;padding:0px;height:auto;vertical-align:middle;" /> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;border:0px none;color:#8C8C8C;font-family:&quot;Microsoft Yahei&quot;, &quot;Hiragino Sans GB&quot;, sans-serif;font-size:13px;white-space:normal;background-color:#FFFFFF;"> 嵌入式系统要求测试工具既能评估单个单元、又能评估整个系统！如图所示，典型MP3音乐播放器的方框图。象许多嵌入式计算设备一样，MP3播放器使用混合信号，其中包含各种数字串行总线、数字信号处理器、连接存储器的数字并行总线、数字模拟转换器和模拟放大器。 </p> <table class="dateTabel" width="100%" style="margin:0px;padding:0px;border-spacing:0px;color:#8C8C8C;font-family:&quot;Microsoft Yahei&quot;, &quot;Hiragino Sans GB&quot;, sans-serif;font-size:13px;background-color:#FFFFFF;"> <thead style="margin:0px;padding:0px;"> <tr class="firstRow" style="margin:0px;padding:0px;border:0px none;"> <th width="16%" style="margin:0px;padding:8px;border:0px none #E8F2F6;font-family:arial, sans-serif;text-align:center;background:#E8F2F6;color:#014785;"> 应用涉及方向 </th> <th width="23%" style="margin:0px;padding:8px;border:0px none #E8F2F6;font-family:arial, sans-serif;text-align:center;background:#E8F2F6;color:#014785;"> 测试项目 </th> <th width="23%" style="margin:0px;padding:8px;border:0px none #E8F2F6;font-family:arial, sans-serif;text-align:center;background:#E8F2F6;color:#014785;"> 推荐产品 </th> <th width="13%" style="margin:0px;padding:8px;border:0px none #E8F2F6;font-family:arial, sans-serif;text-align:center;background:#E8F2F6;color:#014785;"> 附件/选件 </th> <th width="25%" style="margin:0px;padding:8px;border:0px none #E8F2F6;font-family:arial, sans-serif;text-align:center;background:#E8F2F6;color:#014785;"> 备注 </th> </tr> </thead> <tbody style="margin:0px;padding:0px;"> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 低速串行总线<br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> CAN/LIN/FLEXRAY </td> <td rowspan="4" style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4000/MSO4000<br style="margin:0px;padding:0px;" /> DPO3000/MSO3OOO<br style="margin:0px;padding:0px;" /> DPO2000/MSO2000 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4AUTO/DPO3AUTO<br style="margin:0px;padding:0px;" /> /DPO2AUTO<br style="margin:0px;padding:0px;" /> TDP0500/TDP1000 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> I2C/SPI </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4EMBD/DPO3EMBD<br style="margin:0px;padding:0px;" /> /DPO2EMBD </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> RS232/422/485/UART </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4COMP/DPO3COMP<br style="margin:0px;padding:0px;" /> /DPO2COMP </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> I2S/LJ/RJ/TDM </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4AUDIO/DPO3AUDIO </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 高速串行总线 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> SATA </td> <td rowspan="8" style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO7000<br style="margin:0px;padding:0px;" /> DPO/MSO/DSA70000 BusDoctor<br style="margin:0px;padding:0px;" /> Xgig<br style="margin:0px;padding:0px;" /> EX260A<br style="margin:0px;padding:0px;" /> EX280A<br style="margin:0px;padding:0px;" /> EX300A<br style="margin:0px;padding:0px;" /> WUSBEX300 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> SAS </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> PCIE </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> USB2.0 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> USB3.0 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> Wireless USB </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> Fiber Channel </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 1000M-Ethernet </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 现场可编程门整列 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> FPGA </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> MSO4000<br style="margin:0px;padding:0px;" /> TLA5000<br style="margin:0px;padding:0px;" /> TLA6000<br style="margin:0px;padding:0px;" /> TLA7000 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> FPGAVIEW </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 电源管理 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 开关损耗 </td> <td rowspan="3" style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4000<br style="margin:0px;padding:0px;" /> DPO3000 </td> <td rowspan="3" style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4PWR<br style="margin:0px;padding:0px;" /> DPO3PWR </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> B-H分析 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 纹波测量 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 信号完整性 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 上升时间 </td> <td rowspan="3" style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> DPO4000<br style="margin:0px;padding:0px;" /> DPO7000<br style="margin:0px;padding:0px;" /> DPO70000 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 群延迟 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 时钟检查恢复 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 处理器和微控制器 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 单步检查 </td> <td rowspan="3" style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> TLA5000<br style="margin:0px;padding:0px;" /> TLA6000<br style="margin:0px;padding:0px;" /> TLA7000 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 存储器 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 设计仿真 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> <tr style="margin:0px;padding:0px;border:0px none;"> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> 加电验证 </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> <td style="margin:0px;padding:8px;border:0px none #E3F0F4;font-family:arial, sans-serif;font-size:13px;background:#FAFDFD;"> <br style="margin:0px;padding:0px;" /> </td> </tr> </tbody> </table> <p style="margin-top:0px;margin-bottom:0px;padding:0px;border:0px none;color:#8C8C8C;font-family:&quot;Microsoft Yahei&quot;, &quot;Hiragino Sans GB&quot;, sans-serif;font-size:13px;white-space:normal;background-color:#FFFFFF;"> 尽管嵌入式系统内部常用的许多技术都存在既定的标准，但主要测试要**保证所有单元同步，作为无缝集成的整体运行。终端设备可能会包含多个嵌入式系统，部分系统必需相互通信及与外部世界通信(如:I2C，SPI，RS232，RS422，RS485，UART，CAN，LIN，FlexRay，并行等)。这是集成测试的延伸，以保证综合功能、定时操作和通信。这一领域要求测试工具既能评估单个单元、又能评估整个系统！如图所示，典型MP3音乐播放器的方框图。象许多嵌入式计算设备一样，MP3播放器使用混合信号，其中包含各种数字串行总线、数字信号处理器、连接存储器的数字并行总线、数字模拟转换器和模拟放大器。 </p> <div> <br /> </div>